We just got tipped off to the existence of the Symphonic Anime Orchestra. If you don't know about this group, you should, because they are amazing. They will be performing at the Middle Tennessee Anime Convention (MTAC) at the end of the month.
In the meantime, they shared some truly extraordinary sheet music resources. If you play any kind of symphonic instrument, you need to check these out. For each of these songs, there are multiple instrument parts, so take a look: Title Theme, Cutie Mark Crusaders Theme, At the Gala, Smile, and Raise This Barn.
A big thank you to the arranger from the Symphonic Anime Orchestra for sharing these resources!